Inventor
Manfred Bergfeld
Inventor
Erlenbach, DE
Overview
Patents· 36 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds63%
C07DHeterocyclic compounds17%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry7%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds7%
A01NPreservation of bodies of humans or animals or plants or parts thereof2%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds2%
PatentTitleYear
6,222,075'Process for the production of N, N, N\', N\',-tetra-(2-hydroxyethyl)ethylene diamine'20016,159,894'Catalyst for dehydrogenation of amino alcohols to amino carboxylic acids or of ethylene glycol (derivatives) to oxycarboxylic acids, method for their production and their use'20004,670,556'Process for the production of thiazolyl-2-sulphenamides'19874,558,135'Process for the preparation of dithiazolyl disulfides'19854,486,603'Preparation of trans cyclohexane 1,4-diamine'19844,468,526'Process for the preparation of thiuram disulfides'19844,467,114'Preparation of trans cyclohexane 1,4-diurea'19844,459,424'Process for the preparation of thiuram disulfides'19844,457,871'Preparation of trans cyclohexane,1,4-diisocyanate and related compounds'19844,439,370'Preparation of trans cyclohexane 1,4-diisocyanate'19844,418,211'Preparation of trans-cyclohexane-1,4-disulphonyl urea'19834,404,401'Process for the preparation of para-amino-diphenylamine'19834,393,238'Method for the production of blocked isocyanates'19834,357,447'Polymere N-halogenamide auf basis von acryl-und methacrylamid'19824,356,289'Polymeric N-halogenoamides on the basis of acrylamide and methacrylamide'19824,346,233'Process for the preparation of ureas'19824,342,707'Process for the preparation of bis-N-chloramides'19824,317,947'Process for the preparation of nitrosobenzene'19824,316,031'Process for the preparation of 2-mercaptobenzothiazole'19824,314,089'Process for the preparation of nitrosobenzene'19824,307,236'Process for the preparation of dithiazole-disulfides'19814,301,257'Polyfunctional isocyanates free of alkali and urea groups'19814,275,223'Preparation of trans-cyclohexane-1,4-diurethanes'19814,259,258'Preparation of bis-n-chloramides of cycloaliphatic carboxylic acids'19814,242,523'Process for the preparation of para-nitroso-diphenyl-hydroxylamines'19804,238,404'Process for the preparation of isocyanate derivatives of aliphatic, cycloaliphatic, and araliphatic compounds'19804,210,602'Process for the preparation of asymmetrical N-phenyl-N\'-substituted para-phenylene diamines'19804,203,916'Preparation of trans cyclohexane 1,4 diisocyanate'19804,178,315'Process for the preparation of nitrosobenzene'19794,157,450'Benzene-1,3,5-tris-acetoxime and the process for making phloroglucinol therewith'19794,129,740'Process for the preparation of para-nitroso-diphenylhydroxylamines'19784,123,461'Benzene-tricarboxylic acid-(1,3,5)-tri-N-chloramide and process for the preparation thereof'19784,115,451'Benzene-1,3,5-tris-acetoxime and the process for making phloroglucinol therewith'19784,071,555'Benzene-1,3,5-tris-acetoxime and the process for making phloroglucinol therewith'19784,057,588'Process for the preparation of phloroglucinol'19773,965,172'Production of N,N-dichloro-terephthalamide and N,N-dichloro-isophthalamide'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1985Patents assigned to AKZONA INC (30)· patent assignee history
1976–2000Based in Erlenbach, DE· patent location history
1981–2001Based in Erlenbach-Mechenhard, DE· patent location history
1982–1987Patents assigned to AKZO NV (4)· patent assignee history
1982Based in Erlenback, DE· patent location history
2000–2001Patents assigned to AKZO NOBEL NV (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AKZONA INC | 30 | 1976–1985 |
| AKZO NV | 4 | 1982–1987 |
| AKZO NOBEL NV | 2 | 2000–2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| Erlenbach, DE | 31 | 1976–2000 |
| Erlenbach-Mechenhard, DE | 4 | 1981–2001 |
| Erlenback, DE | 1 | 1982 |